Cheap Flights from Cardiff (CWL) to Washington D.C. (WASA)

Compare Cardiff to Washington D.C. flight deals

Find the cheapest month or even day of the year to fly to Washington D.C.

Book the best Washington D.C. fare with no extra fees

Flight deals from Cardiff Airport to Washington D.C.

Looking for a cheap last-minute deal or the best return flight from Cardiff Airport to Washington D.C.? If you want to travel next month, return fares start from £679. Find the lowest prices on one-way and return tickets right here.

Washington D.C..£413 per passenger.Departing Thu, 30 Apr.One-way flight with Ryanair.Outbound indirect flight with Ryanair, departs from Cardiff on Thu, 30 Apr, arriving in Washington Ronald Reagan.Price includes taxes and charges.From £413, select.

Washington D.C..£460 per passenger.Departing Wed, 12 Aug.One-way flight with Ryanair.Outbound indirect flight with Ryanair, departs from Cardiff on Wed, 12 Aug, arriving in Washington Dulles.Price includes taxes and charges.From £460, select.

Find the cheapest month to fly from Cardiff to Washington D.C.

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Cardiff to Washington D.C. flights are currently cheapest in April.

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Alternative Cardiff to Washington D.C. routes

Looking for the cheapest, fastest or easiest route from Cardiff to Washington D.C.? You could fly into the following airports instead.

Cardiff to Washington D.C.: Flight information

The things to know before you go.

Cheapest flight found	£413
Cheapest month to fly	April

Finding cheap flights from Cardiff to Washington D.C.: Frequently asked questions

How many airports are there in Washington D.C.?

There are 5 airports in Washington D.C.: Washington Ronald Reagan, Camp Springs Andrews AFB, Washington Dulles, Baltimore Washington International, and Manassas.

How much are return flights from Cardiff to Washington D.C.?

The best price we found for a return flight from Cardiff to Washington D.C. is £547. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from Cardiff to Washington D.C.?

Currently, there are no airlines that fly direct from Cardiff to Washington D.C.. But we found flights with one or more stops from £547.

How many flights are there a week from Cardiff to Washington D.C.?

As of March 2026, there are no flights flying from Cardiff to Washington D.C..

When is the cheapest time to fly from Cardiff to Washington D.C.?

The cheapest month to fly from Cardiff to Washington D.C. is usually April.

Which is the cheapest airport to fly into in Washington D.C.?

If you're flying from Cardiff Airport, the cheapest airport near Washington D.C. is Washington Dulles – which is 22.7 miles away from the centre of Washington D.C.. We've found flights into this airport from £547.

Which upcoming date is cheapest to fly from Cardiff Airport to Washington D.C. on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Cardiff Airport to Washington D.C. on Sunday, 26 April 2026.

Can I get a direct flight from Cardiff Airport to Washington D.C.?

No airlines currently offer direct flights between Cardiff Airport and Washington D.C.. Most routes have one or more stops.

How can I get the best flight deal from Cardiff Airport to Washington D.C.?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Washington D.C. but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Washington D.C.?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Washington D.C. is around 40 days in advance, so don’t leave your flight to the last minute.

What’s the weather like in Washington D.C.?

In March, the average temperature is usually around 6°C. July is typically the warmest month in Washington D.C., when it usually averages around 31°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging -4°C. The rainiest month is September.

Which is the cheapest airline to fly from Cardiff Airport to Washington D.C. with?

Currently, Ryanair offers the cheapest flight tickets to Washington D.C..

Travelling from Cardiff Airport (CWL) to Washington DC: what you need to know

Washington DC is four hours behind Cardiff, where Cardiff Airport is located. Washington DC follows the UTC-4 timezone.
For stress-free travel, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This ensures you have enough time to board your CWL to Washington DC flight.
Delays at security and check-in are likely if you're heading away during high season, so give yourself even more breathing space. A good general rule for peak times? Arrive up to four hours early for international flights and at least two hours for domestic departures.
Stopovers are the ideal opportunity to take a break from travelling and maybe even explore a different city. When browsing for plane tickets from CWL to Washington DC, deselect the 'Direct flights only' box to see where you can visit along the way. Here are some options to consider:
- Amsterdam Airport Schiphol (AMS)
- Dublin Airport (DUB)
- Keflavik International Airport (KEF)
Located around 9 miles from central Cardiff, CWL can be reached in about 30 minutes by car (depending on traffic). The journey on public transport will take roughly 1 hour 5 minutes.
Planning to catch an early flight from Cardiff Airport to Washington DC? Avoid the stress of rushing to the airport (and catch some extra z's) by choosing one of these stays near CWL:
66.16% of flights that leave from Cardiff Airport make it to their destination on schedule.

How to find the cheapest flights from Cardiff Airport (CWL) to Washington DC

The lowest price we've seen for a one-way Cardiff Airport to Washington DC flight is £413. The cheapest price for a return flight is £547. Bear in mind fares can change due to availability at the time of booking.
Booking in advance is often the key to securing a cheap flight from CWL to Washington DC. Airlines adjust prices based on demand, so the closer your departure date, the more you'll likely spend.
The 'Whole month' search tool will show you the cheapest tickets from Cardiff Airport to Washington DC throughout the entire month. It's an easy way to find a bargain if your plans aren't set in stone.
Picking up a cheap flight from CWL to Washington DC couldn't be easier with Price Alerts. All you need to do is create one of these automatic notifications and we'll let you know when the price has dropped.
Find a cheap flight from Cardiff Airport to Washington DC with the help of our filters. Select your ideal times, number of stops and airlines, then sort the results by 'Cheapest' for the best deals.

Airports in Washington DC

Ronald Reagan National Airport (DCA)

Ronald Reagan National Airport (DCA) to the centre of Washington DC takes around 15 minutes by car. The centre is roughly 5 miles away.
When travelling on public transport, expect a journey time of about 45 minutes.
Look into staying at a hotel near DCA if you have a late flight from Cardiff Airport to Washington DC. Select one of these accommodation options and make your arrival easier:
Grab a Ronald Reagan National Airport rental car and discover Washington DC and beyond with your own set of wheels. Thrifty, Sixt and Dollar are popular outlets you can book with here.
Booking your ride from Ronald Reagan National Airport about four weeks in advance of your flight from CWL to Washington DC can help you secure the lowest rate.
The address for DCA is 1 Aviation Circle.

Washington Dulles International Airport (IAD)

Washington Dulles International Airport (IAD) is roughly 35 miles from central Washington DC. Once you've hopped off your flight from Cardiff Airport to Washington DC, it'll take you around 50 minutes to reach the heart of the city in a ride-share or cab.
If you choose to travel on public transport, you'll get to the city centre in 1 hour 10 minutes or so.
There are some great places ready to welcome you near IAD. Settle in and get cosy after your CWL to Washington DC flight at any of these well-located options:
Forget about public transport timetables or long cab queues. Grab a Washington Dulles International Airport rental car and let the journey unfold your way. Check out the rates and availability from Dollar, Thrifty and Sixt.
Secure your first choice, not your last resort. Securing your ride from IAD one week in advance often means better deals and a bigger choice of vehicles.
You'll find Washington Dulles International Airport at 1 Saarinen Circle.

Baltimore/Wash International Thurgood Marshall Airport (BWI)

Step off your flight from Cardiff Airport to Washington DC and go straight to your hotel or start exploring right away. The centre of Washington DC is around 30 miles from Baltimore/Wash International Thurgood Marshall Airport (BWI) and usually takes 50 minutes to drive there.
If you're travelling on public transport, the journey will take you about 1 hour 30 minutes.
If you don't want to make the journey into the centre, head for a hotel near BWI. Make yourself comfy at one of these options after your CWL to Washington DC flight:
Whether you're searching for a compact for solo travel or a roomy SUV to fit the whole crew comfortably, you'll find the right Baltimore/Wash International Thurgood Marshall Airport rental car for you. Explore the types of wheels available here from providers such as Dollar, Thrifty and Budget.
Around two weeks ahead of your flight from Cardiff Airport to Washington DC is the ideal time to secure your ride from BWI. You're more likely to lock in a better rate or score some early bird savings.

Best time to go to Washington DC

Plan your trip to Washington DC during peak season if you want a bustling atmosphere, but remember that prices are generally higher. Alternatively, book your flights from Cardiff Airport to Washington DC during the off-season when prices are cheaper and it's not as busy.
Lock in a Cardiff Airport to Washington DC plane ticket with a departure in July to visit the city during its warmest month. Expect temperatures to range from 19ºC (66ºF) to 33ºC (91ºF).
If you'd rather travel in cooler conditions, search for a cheap ticket from CWL to Washington DC in January when temperatures average between -6ºC (21ºF) and 10ºC (50ºF).

More about Washington DC

Once you've booked your flight from Cardiff Airport to Washington DC, find a hotel that keeps you close to what you want to see. Make one of these options your base for exploring Washington DC:
There are so many things to do and see in this city it can be tricky to work out where to start. The White House, White House Historical Association and National Mall are highlights which should be on any well-planned Washington DC itinerary.

Explore more of United States

Washington DC has plenty to offer, but there are so many other parts of United States you should also see. About 200 miles north-east of Washington DC, a trip to New York will keep you on the go. Don't miss top attractions like Statue of Liberty, Central Park and Empire State Building.
Philadelphia is another essential stop in United States and is around 120 miles north-east of Washington DC. No trip is complete without visiting Liberty Bell, Independence Hall and Philadelphia Museum of Art.